package collection;

import java.util.*;

public class SortListDemo {
    public static void main(String[] args) {
        List<Point> list=new ArrayList<>();

        list.add(new Point(1,2));
        list.add(new Point(3,4));
        list.add(new Point(5,6));
        list.add(new Point(7,8));
//        Comparator <Point> comparator=new Comparator<Point>(){
//            public int compare(Point o1,Point o2){
//                int len1=o1.getX()*o1.getX()+o1.getY()*o1.getY();
//                int len2=o2.getX()*o2.getX()+o2.getY()*o2.getY();
//                return len1-len2;
//            }
//        };
        Collections.sort(list,new Comparator<Point>() {
                    public int compare(Point o1, Point o2) {
                        int len1 = o1.getX() * o1.getX() + o1.getY() * o1.getY();
                        int len2 = o2.getX() * o2.getX() + o2.getY() * o2.getY();
                        return len1 - len2;
                    }
                }
            );
        System.out.println(list);

    }
}
